.title {
	text-align: center;
}

.test_outer {
	display: block;
	width: 512px;
	height: 381px;
	margin: 1em auto;
	position: relative;
	overflow: hidden;
}

.trans {
	-webkit-transition: 0.3s ease;
	-moz-transition: 0.3s ease;
	-ms-transition: 0.3s ease;
	-o-transition: 0.3s ease;
	transition: 0.3s ease;
}

.test_cover {
	width: 100px;
	height: 100px;
	border: 512px solid rgba(0, 0, 0, 0.35);
	position: absolute;
	border-radius: 50%;
	left: -325px;
	top: -465px;
}

.test_cover:hover {
	width: 150px;
	height: 150px;
	left: -350px;
	top: -490px;
}

.test_cover:hover:after {
	content: "看，菊花！";
	margin: 50px 0 0 -30px;
	position: absolute;
	font: bold 20px/1.2 "微软雅黑";
	color: white;
	text-shadow: 1px 1px gold;
}